@article {3596,
	title = {Acid Deposition Alters Red Spruce Physiology: Laboratory Studies Support Field Observations},
	journal = {Canadian Journal of Forest Research},
	volume = {23},
	year = {1993},
	month = {March},
	pages = {380-386},
	keywords = {Acid rain, Red spruce, Soil acidity},
	author = {McLaughlin, Samuel B and Tjoelker, Mark G and Roy, W. Kelly}
}
@article {2926,
	title = {A Comparison of Seasonal Patterns of Photosynthate Production and Use in Branches of Red Spruce Saplings at Two Elevations},
	journal = {Canadian Journal of Forest Research},
	volume = {21},
	year = {1991},
	month = {April},
	pages = {455-461},
	keywords = {Flora, Geography, Red spruce, Trees},
	url = {http://www.nrcresearchpress.com/doi/pdf/10.1139/x91-061},
	author = {Andersen, Christian P and McLaughlin, Samuel B and Roy, W. Kelly}
}
@article {4656,
	title = {Increased Dark Respiration and Calcium Deficiency of Red Spruce in Relation to Acidic Deposition at High-elevation Southern Appalachian Mountain Sites},
	journal = {Canadian Journal of Forest Research},
	volume = {21},
	year = {1991},
	pages = {1234-1244},
	keywords = {Red spruce, Soil acidity, Topography, Trees -- Growth},
	author = {McLaughlin, Samuel B and Andersen, Christian P and Hanson, Paul J and Tjoelker, Mark G and Roy, W. Kelly}
}
@article {4655,
	title = {Seasonal Patterns of Photosynthesis and Respiration of Red Spruce Saplings from Two Elevations in Declining Southern Appalachian Stands},
	journal = {Canadian Journal of Forest Research},
	volume = {20},
	year = {1990},
	pages = {485-495},
	keywords = {Air pollution, Clingmans Dome, Red spruce, Spruce-Fir forests, Woolly adelgids},
	author = {McLaughlin, Samuel B and Andersen, Christian P and Edwards, N. T and Roy, W. Kelly and Layton, P. A}
}
